Abstract: The present invention relates to a photosensitive member containing a specific hydrazone compound or a specific azine compound for a charge transporting agent, which is improved in a sensitivity, chargeability, resistivity for repeated use and stability.

Abstract: The present invention provides a new photosensitive member, in which a specific disazo pigment is used as a photoconductive material, which is excellent in whole static properties, especially in sensitivity.

Abstract: A photosensitive member according to the present invention comprises an electrically conductive substrate and a photosensitive layer comprising a binder resin and a styryl compound dispersed therein and represented by the general formula (I), ##STR1## wherein R.sub.1, R.sub.3 and R.sub.5 each represent hydrogen or an alkyl, aryl, aralkyl or heterocyclic group, the aryl, aralkyl and heterocyclic groups having or not having a substituent, R.sub.2, R.sub.4 and R.sub.6 each represent a substituted or unsubstituted aryl, aralkyl or heterocyclic group, R.sub.1 and R.sub.2, R.sub.3 and R.sub.4, and R.sub.5 and R.sub.6 taken together form a ring, and R.sub.7, R.sub.8 and R.sub.9 each represent hydrogen or an alkyl, alkoxyl, aralkyl or aryl group.A photosensitive member of this structure exhibits high sensitivity, is outstanding in the ability to retain charges and in charge transporting ability and less prone to deterioration when repeatedly used.

Abstract: A hydrazone compound useful in phthalocyanine photoreceptors to provide them with excellent sensitivity and repeat stability and low residual voltage invention has the following formula: ##STR1## wherein X and Y independently represent a hydrogen atom, a lower alkyl, methoxy or ethoxy group, Z represents a lower alkyl, benzyl, hydroxyl, lower alkoxy, phenoxy or benzyloxy group, Z' represents a hydrogen atom, an alkyl group or an alkoxy group, and R represents a lower alkyl group, an aryl group which may have a substituent, or a benzyl group.

Abstract: An electrophotographic photoreceptor which has excellent electrophotographic characteristics even when exposed to high-temperature and high-humidity conditions is formed from a phthalocyanine which has been treated with an acrylic resin, the acrylic resin having been obtained by polymerization of not less than 15 mole % of a monomer represented by the general formula, ##STR1## wherein R.sub.1 and R.sub.2 independently represent a hydrogen atom or an alkyl, aryl or cycloalkyl group, or R.sub.1 and R.sub.2, taken together, may form a heterocyclic-ring containing a nitrogen atom, R.sub.3 represents a hydrogen atom or methyl group, and n represents an integer of 1 or more, or an acid salt of the monomer.

Abstract: A photosensitive member comprises a photosensitive layer which includes a phthalocyanine photoconductive material dispersed in a resin binder comprising a thermosetting acrylic resin containing hydroxyl groups or amide bond, and a melamine resin. Preferred mixing weight ratio of acrylic resin to melamine resin is about 95:5 to 40:60. Preferred phthalocyanine compounds are copper phthalocyanine, metal-free phthalocyanine and their derivatives.